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| author | Nayna Jain <nayna@linux.ibm.com> | 2020-07-15 07:52:01 -0400 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-07-16 14:49:53 +1000 |
| commit | 61f879d97ce4510dd29d676a20d67692e3b34806 (patch) | |
| tree | 2a69db0311abd20253fb0a61093f92609078df63 /Documentation/powerpc | |
| parent | a9f675f950a07d5c1dbcbb97aabac56f5ed085e3 (diff) | |
| download | linux-61f879d97ce4510dd29d676a20d67692e3b34806.tar.bz2 | |
powerpc/pseries: Detect secure and trusted boot state of the system.
The device-tree properties to check secure and trusted boot state are
different for guests (pseries) compared to baremetal (powernv).
This patch updates the existing is_ppc_secureboot_enabled() and
is_ppc_trustedboot_enabled() functions to add support for pseries.
For pseries the secureboot and trustedboot state are exposed via
device-tree properties /ibm,secure-boot and /ibm,trusted-boot.
The values of ibm,secure-boot under pseries are interpreted as:
0 - Disabled
1 - Enabled in Log-only mode. This patch interprets this value as
disabled, since audit mode is currently not supported for
Linux.
2 - Enabled and enforced.
3-9 - Enabled and enforcing; requirements are at the discretion of
the operating system.
The values of ibm,trusted-boot under pseries are interpreted as:
0 - Disabled
1 - Enabled
Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
Reviewed-by: Daniel Axtens <dja@axtens.net>
Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>
[mpe: Drop machdep.h inclusion, tweak change log slightly]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1594813921-12425-1-git-send-email-nayna@linux.ibm.com
Diffstat (limited to 'Documentation/powerpc')
0 files changed, 0 insertions, 0 deletions